Rock-breaking shovel.



0. S. PROGTOR.

ROCK BREAKING SHOVBL. APPLIOATION FILED AUG.18, 190s.

Patented July 15, 1913.

O. S. PROGTOR.

ROCK BREAKING SHOVEL.

APPLICATION FILED AUG. 18, 1908. 1,0 7,375, 7 Patented July 15, 1913.

8 SHEETS-SHEET 2.

Z0 f7 2% Z2 3/ 1/ WITNESSES l/VVENTUR O. S. PROOTOR.

ROCK BREAKING SHOVEL.

APPLICATION FILED we. 1a, 1908.

Patented July 15, 1913 3 SHEETS-SHEET 3.

INVENTOR SQ%nZ% UNITED STATES PATENT OFFICE.

om s.: rnoo'ron, on NEW YonK; Y.

noon-BREAKING snovnr...

Specification of Letters Patent; I

Application nlednugust 1a, 1908.- Serial Hoz.449,187.

To all whom it may concern:

Be it known that I, OLIN S. Pnoc'ron, a

citizen of the United States, and resident-of the city of New York, county and State of New York, have invented ,certain new. and.

useful Improvements in- Rock-Breaking Shovels, of which .the following is a-specification.

It is the purpose of this invention to pro- 0 videa mechanically operatedshovel that.

Thismvention comprises amongits objects,-.first; to provide a device. of the class:

described, of simple construction and operation, which will be capable ofbreaking rock off-ofthe solid. Second to providev percussive hammers in combination with the shovel, said hammers bein adapted to break the rock as the shovel gat ers it up. Third, to provide means for. automatically. controlling the operation of-the'hammers so that they work-.only when in contact with the rock. These objects are accomplished. by a machine comprising a main body frame, 'mounted on trucks that can be transported from place to place as the work requires Onthis-frame. is mounted a stealnboilerwhichsupplies fluid under-pressure to the three irsofengines for performing the following respective functions: First. One.

mounted-on the mast-frame and adapted by.

means of suitable cables and pulleys to lift theshovel. overthe boom. Second. The.en-. gines on.the boom adapted-tocperate theram to which the shovel isattached. The thirdby-means of a cable-andbull Wheel swings the shovel in.the horizontal plane.- Inthe bottom ofythe shovel aplurality of percussive hammers are mounted adaptedto break the rock when the shovel is forced against itin the usual manner, the detailsv of-which'will .be. fully described hereinafter.

Inthe illustration of the pre erred form of device embodying my invention in the drawings herewith .and hereafter described, I do not desire-to limitmysel-f to theexact formofthe construction shown, since such construction may be capable of modification as' desired without departing from the s irit of the inventiom neithem do I limit t e use of my invention toany; particular class of excavation.

My invention-consists inth'e-design, ar

rangement, construction, combination and operation-of "parts as setforth in and fallmg w thin the scope ofthe claims hereto appended.

In the. drawings like characters-of reference denote like in, all. the figures thereofl Flgu-re .1 is aside; elevationv of the complete machine with. a sectionfoithe boiler housmg removed. 2a plan view of the complete machine with, the. boiler. housing removed. Fig.3 3-:is a bottom plan. view of:

the shovel showing; the. relation .of the. percussive hammers. Fi 4 iscanplan-view of.

.onehammer.. Fig. 5 ongitudinalsectionof one; hammer. F1g. 6 .is. a=longitudinal secs -tlon of thevalvethatrcontrols the. sup ply .to..thehammer. Fig.- 7 is a transverse sect1on-thr hthewalve-H.

Patented July15',-'1913-.-i

The main -ame 7 .is mounted preferably. I

onrailroadirucksfi and 8, attached zto the frame-.7. are steel .bracesfi and. 9, provided with hand wheel screws 10 and 10 sup; ported .on timbers 11. The; boiler 12 and the engineslB, 14 and 15 may. be of any pteferred type. Engine.-13f.is -monnted on 1 the mast frame 1.6-. and by means. of .thelfriction drivel? operatesthe reducing gear. 18 which operates .47 e drumlato. wind'in the cable-20- oven the-sheave wheel. 21 which is mounted on the boom 22 andsoperates to lift-the dipper 23.; The engine lab is vmolmtediontthe boom. 22.and by-,. means-of thefriction drive 24 opprabesthe reducing gear 25 whichis mounted shaft 26.; also mounted-on shaft 26.1s-.-th1e spur gear. (not shown.) whichengeges the rack. 27 onrthe. ram .28 the. functlon of, which is. to thrust, or. draw the d1pper 23 The engine 15by means.of.-the. frictlon drive- 29 operates the reducigear, 30- which. drives. the shafton whic the drums31 and 31 are mounted around which the ends of, the, cable 32 pass in opposite directions; and; are, attached thereto. Thecable.;32 alsopasses around the. bull, g-wheel 33 so that revolvingthe. drums31 and 31 correspondingly. revolves the bull wheel 33: which swings-Y the .shovel the. horizontal plan-8i The construction and operation of the steam shovel are well known,- and I.- do not .confine myselfzto any-i particular typeof. shovelrbecause; this invention may, be. operated. suc- -ber are attached to the bottomof thevdipper hammer 53 and the rear end of the casing 52 is closed by the metal disks 54 and 55 between which is interposed a layer of packing 56 and rearward of disk 55 is placed a plurality of springs 57 which rest against the real cylinder head 58. These springs are to protect the cylinder head from the hammer. At the forward end of the cylindrical casing 52 is placed a metal ring 59 forward of which is placed a piece of hydraulic leather 60 adapted to fit around the steel 61 and forward to the hydraulic leather 60 is. placed a metal ring 62 against which the springs 63 bear, being held in position by the chuck 64. The chuck 64 is provided with a recess 65 in which rests the coilspring 66 which engages the arm 67 of the valve rod 68. The steel is provided with the shoulder 69 which operates the valve rod 68 through the arm 67 or the spring 70 accordingly as the steel is forced backward or forward. The spring 70 keeps the steel 61 from dropping out and is provided with eyes which engage lugs 71 on the casing 52 so that it can be swung out to release the steel 61.

The, cylindrical casing 52 is provided with a valve cylinder 72 in which is located the valve piston 73 adapted to opcrate the valve 74 as air pressure is supplied to the cylinder 72 through tubes 75 and 75 The supply of air to cylinder 72 through the tubes 75 and 75 is controlled by the hammer 53. The valve 74 is provided with air pressure port 76 and exhaust port '77 so that as it is rotated by piston 73 the ports 78 and 79 are alternately caused to register with the live air port 76 and exhaust port 77 of the valve 74 so that the hammer 53 is reciprocated in the casing 52.

The valve rod 68 is provided with a valve 80 seated in valve casing 81 which also constitutes an elbow and nipple'in the air line 51 to supply air pressure port 76 in valve 74 so that pressure on the steel 61 forces shoulder 69 against the arm 67, valve rod 68 thereby opens the yalve 80 which admits air to operate the hammer 53 to strike the steel 61. The exhaust from port 77 is led away through conduit 82 to discharge at a point on boom 22 so that the hammer will operate under water as well as above water.

The operation of the machine is as folrod 68 which opens valve 80 and admits air to operate hammer 53 which drives the steel 61 into the rock to split and break it, and as it is broken it falls into the shovel and is dumped into cars in the usual manner. "When the steel 61 is freed the spring 66 operates to close the valve 80 and stop the hammer 53.

I claim:

1. The combination with the dipper of any preferred type of power shovel of pneumatic hammers suitably located on said dipper for breaking rock, substantially as described.

2. The combination with the dipper of any preferred type of power shovel of pneumatic hammers suitably located on said dipper for breaking the rock and means to automatically stop and start said hammers.

3. In an excavating machine, in combination, a dipper, power driven means to swing said dipper upwardly whereby it may engage the face of the work, and longitudinally reciprocating percussive tools mounted on said dipper with their cutting edges in advance of the engaging lip of said dipper and operable to engage the face of the work and dislodge the material therefrom during the upward thrust swingof the dipper whereby said dislodged material will be received by the dipper.

4. In an excavating machine, in combination, a frame mounted to swing on a pivot with an upwardly thrust movement, a dipper carried at the free end thereof, power driven means adapted to swing said frame upwardly whereby the engaging lip of said dipper will approach the face of the work, and longitudinally reciprocating percussive tools mounted on said dipper with the cutting edges of said tools extending forward and in advance of the engaging lip of the dipper and operable to engage the face of the work and dislodge the material therefrom during the upward thrust movement of the frame whereby the dislodged material will be received by the dipper.

5. In an excavating machine, in combination, a dipper, power-driven means to swing said dipper upwardly and thrust said dipper close to the face of the work, and percussive tools rigidly carried in advance of the lip of said dipper with their cutting edges forward of and substantially in alinement with the engaging lipof the dipper OLIN s. PROCTOR.

Witnesses:

A. ERNST, M. R. KEATING. 

